/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:34:47,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:34:47,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:34:47,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:34:47,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:34:47,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:34:47,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:34:47,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:34:47,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:34:47,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:34:47,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:34:47,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:34:47,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:34:47,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:34:47,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:34:47,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:34:47,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:34:47,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:34:47,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:34:47,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:34:47,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:34:47,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:34:47,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:34:47,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:34:47,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:34:47,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:34:47,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:34:47,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:34:47,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:34:47,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:34:47,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:34:47,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:34:47,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:34:47,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:34:47,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:34:47,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:34:47,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:34:47,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:34:47,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:34:47,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:34:47,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:34:47,273 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:34:47,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:34:47,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:34:47,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:34:47,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:34:47,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:34:47,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:34:47,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:34:47,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:34:47,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:34:47,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:34:47,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:34:47,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:34:47,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:34:47,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:34:47,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:34:47,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:34:47,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:34:47,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:34:47,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:34:47,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:34:47,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:34:47,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:34:47,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:34:47,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:34:47,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:34:47,714 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:34:47,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:34:47,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3687c85/d3b3ebe71ed443548e40e2f9e8af5bfb/FLAGd720dc090 [2020-12-22 08:34:48,622 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:34:48,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:34:48,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3687c85/d3b3ebe71ed443548e40e2f9e8af5bfb/FLAGd720dc090 [2020-12-22 08:34:48,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad3687c85/d3b3ebe71ed443548e40e2f9e8af5bfb [2020-12-22 08:34:48,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:34:48,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:34:48,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:34:48,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:34:48,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:34:48,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:48" (1/1) ... [2020-12-22 08:34:48,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d5a873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:48, skipping insertion in model container [2020-12-22 08:34:48,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:48" (1/1) ... [2020-12-22 08:34:48,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:34:49,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:34:49,298 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9464,9477] [2020-12-22 08:34:49,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:34:49,431 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:34:49,532 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9464,9477] [2020-12-22 08:34:49,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:34:49,645 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:34:49,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49 WrapperNode [2020-12-22 08:34:49,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:34:49,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:34:49,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:34:49,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:34:49,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:34:49,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:34:49,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:34:49,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:34:49,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... [2020-12-22 08:34:49,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:34:49,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:34:49,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:34:49,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:34:49,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:34:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:34:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:34:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:34:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:34:51,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:34:51,233 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:34:51,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:51 BoogieIcfgContainer [2020-12-22 08:34:51,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:34:51,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:34:51,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:34:51,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:34:51,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:34:48" (1/3) ... [2020-12-22 08:34:51,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8bde46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:51, skipping insertion in model container [2020-12-22 08:34:51,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:49" (2/3) ... [2020-12-22 08:34:51,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8bde46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:51, skipping insertion in model container [2020-12-22 08:34:51,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:51" (3/3) ... [2020-12-22 08:34:51,253 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:34:51,262 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:34:51,268 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:34:51,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:34:51,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:34:51,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:34:51,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:34:51,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:34:51,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:34:51,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:34:51,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:34:51,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:34:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states. [2020-12-22 08:34:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:34:51,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:51,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:51,360 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -678392844, now seen corresponding path program 1 times [2020-12-22 08:34:51,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:51,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996796193] [2020-12-22 08:34:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:51,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996796193] [2020-12-22 08:34:51,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:51,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:51,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178884317] [2020-12-22 08:34:51,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:51,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:51,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:51,973 INFO L87 Difference]: Start difference. First operand 249 states. Second operand 3 states. [2020-12-22 08:34:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:52,182 INFO L93 Difference]: Finished difference Result 502 states and 831 transitions. [2020-12-22 08:34:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:52,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:34:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:52,205 INFO L225 Difference]: With dead ends: 502 [2020-12-22 08:34:52,205 INFO L226 Difference]: Without dead ends: 381 [2020-12-22 08:34:52,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-12-22 08:34:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2020-12-22 08:34:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-12-22 08:34:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 569 transitions. [2020-12-22 08:34:52,318 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 569 transitions. Word has length 95 [2020-12-22 08:34:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:52,319 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 569 transitions. [2020-12-22 08:34:52,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 569 transitions. [2020-12-22 08:34:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:34:52,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:52,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:52,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:34:52,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 118593259, now seen corresponding path program 1 times [2020-12-22 08:34:52,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:52,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393799446] [2020-12-22 08:34:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:52,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393799446] [2020-12-22 08:34:52,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:52,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:34:52,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969376795] [2020-12-22 08:34:52,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:34:52,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:34:52,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:52,907 INFO L87 Difference]: Start difference. First operand 379 states and 569 transitions. Second operand 8 states. [2020-12-22 08:34:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:53,486 INFO L93 Difference]: Finished difference Result 1894 states and 2947 transitions. [2020-12-22 08:34:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:34:53,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-12-22 08:34:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:53,501 INFO L225 Difference]: With dead ends: 1894 [2020-12-22 08:34:53,502 INFO L226 Difference]: Without dead ends: 1610 [2020-12-22 08:34:53,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-12-22 08:34:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1600. [2020-12-22 08:34:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-12-22 08:34:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2483 transitions. [2020-12-22 08:34:53,672 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2483 transitions. Word has length 96 [2020-12-22 08:34:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:53,675 INFO L481 AbstractCegarLoop]: Abstraction has 1600 states and 2483 transitions. [2020-12-22 08:34:53,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:34:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2483 transitions. [2020-12-22 08:34:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:34:53,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:53,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:53,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:34:53,689 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:53,692 INFO L82 PathProgramCache]: Analyzing trace with hash 372250457, now seen corresponding path program 1 times [2020-12-22 08:34:53,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:53,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079951289] [2020-12-22 08:34:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:53,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079951289] [2020-12-22 08:34:53,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:53,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:53,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150511268] [2020-12-22 08:34:53,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:34:53,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:53,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:34:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:53,914 INFO L87 Difference]: Start difference. First operand 1600 states and 2483 transitions. Second operand 6 states. [2020-12-22 08:34:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:54,610 INFO L93 Difference]: Finished difference Result 5410 states and 8509 transitions. [2020-12-22 08:34:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:54,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-22 08:34:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:54,634 INFO L225 Difference]: With dead ends: 5410 [2020-12-22 08:34:54,635 INFO L226 Difference]: Without dead ends: 3896 [2020-12-22 08:34:54,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2020-12-22 08:34:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3892. [2020-12-22 08:34:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3892 states. [2020-12-22 08:34:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 6107 transitions. [2020-12-22 08:34:54,945 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 6107 transitions. Word has length 97 [2020-12-22 08:34:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:54,955 INFO L481 AbstractCegarLoop]: Abstraction has 3892 states and 6107 transitions. [2020-12-22 08:34:54,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:34:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 6107 transitions. [2020-12-22 08:34:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:34:54,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:54,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:54,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:34:54,967 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1864730935, now seen corresponding path program 1 times [2020-12-22 08:34:54,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:54,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522654967] [2020-12-22 08:34:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:55,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522654967] [2020-12-22 08:34:55,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:55,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:34:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654311557] [2020-12-22 08:34:55,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:34:55,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:55,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:34:55,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:34:55,157 INFO L87 Difference]: Start difference. First operand 3892 states and 6107 transitions. Second operand 5 states. [2020-12-22 08:34:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:55,949 INFO L93 Difference]: Finished difference Result 10825 states and 17078 transitions. [2020-12-22 08:34:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:55,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 08:34:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:55,988 INFO L225 Difference]: With dead ends: 10825 [2020-12-22 08:34:55,988 INFO L226 Difference]: Without dead ends: 7086 [2020-12-22 08:34:55,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:34:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2020-12-22 08:34:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 7084. [2020-12-22 08:34:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7084 states. [2020-12-22 08:34:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 11119 transitions. [2020-12-22 08:34:56,556 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 11119 transitions. Word has length 97 [2020-12-22 08:34:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:56,557 INFO L481 AbstractCegarLoop]: Abstraction has 7084 states and 11119 transitions. [2020-12-22 08:34:56,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:34:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 11119 transitions. [2020-12-22 08:34:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:34:56,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:56,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:56,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:34:56,563 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash -196878970, now seen corresponding path program 1 times [2020-12-22 08:34:56,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:56,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633994654] [2020-12-22 08:34:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:56,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633994654] [2020-12-22 08:34:56,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:56,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:34:56,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632934950] [2020-12-22 08:34:56,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:34:56,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:56,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:34:56,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:34:56,747 INFO L87 Difference]: Start difference. First operand 7084 states and 11119 transitions. Second operand 5 states. [2020-12-22 08:34:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:57,951 INFO L93 Difference]: Finished difference Result 20312 states and 32021 transitions. [2020-12-22 08:34:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:57,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 08:34:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:58,024 INFO L225 Difference]: With dead ends: 20312 [2020-12-22 08:34:58,024 INFO L226 Difference]: Without dead ends: 13422 [2020-12-22 08:34:58,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:34:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13422 states. [2020-12-22 08:34:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13422 to 13420. [2020-12-22 08:34:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13420 states. [2020-12-22 08:34:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13420 states to 13420 states and 21071 transitions. [2020-12-22 08:34:59,043 INFO L78 Accepts]: Start accepts. Automaton has 13420 states and 21071 transitions. Word has length 97 [2020-12-22 08:34:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:59,043 INFO L481 AbstractCegarLoop]: Abstraction has 13420 states and 21071 transitions. [2020-12-22 08:34:59,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:34:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13420 states and 21071 transitions. [2020-12-22 08:34:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:34:59,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:59,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:59,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:34:59,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash -133707992, now seen corresponding path program 1 times [2020-12-22 08:34:59,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:59,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217370126] [2020-12-22 08:34:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:59,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217370126] [2020-12-22 08:34:59,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:59,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:34:59,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638055890] [2020-12-22 08:34:59,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:34:59,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:34:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:34:59,147 INFO L87 Difference]: Start difference. First operand 13420 states and 21071 transitions. Second operand 5 states. [2020-12-22 08:35:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:00,939 INFO L93 Difference]: Finished difference Result 39560 states and 62221 transitions. [2020-12-22 08:35:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:00,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 08:35:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:01,011 INFO L225 Difference]: With dead ends: 39560 [2020-12-22 08:35:01,011 INFO L226 Difference]: Without dead ends: 26256 [2020-12-22 08:35:01,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:35:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26256 states. [2020-12-22 08:35:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26256 to 26254. [2020-12-22 08:35:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26254 states. [2020-12-22 08:35:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26254 states to 26254 states and 41096 transitions. [2020-12-22 08:35:02,998 INFO L78 Accepts]: Start accepts. Automaton has 26254 states and 41096 transitions. Word has length 97 [2020-12-22 08:35:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:02,999 INFO L481 AbstractCegarLoop]: Abstraction has 26254 states and 41096 transitions. [2020-12-22 08:35:02,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:35:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 26254 states and 41096 transitions. [2020-12-22 08:35:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:35:03,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:03,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:03,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:35:03,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:03,008 INFO L82 PathProgramCache]: Analyzing trace with hash 349436362, now seen corresponding path program 1 times [2020-12-22 08:35:03,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:03,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620777200] [2020-12-22 08:35:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:03,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620777200] [2020-12-22 08:35:03,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:03,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:03,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736764898] [2020-12-22 08:35:03,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:03,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:03,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:03,110 INFO L87 Difference]: Start difference. First operand 26254 states and 41096 transitions. Second operand 6 states. [2020-12-22 08:35:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:07,067 INFO L93 Difference]: Finished difference Result 102473 states and 160354 transitions. [2020-12-22 08:35:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:07,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-22 08:35:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:07,308 INFO L225 Difference]: With dead ends: 102473 [2020-12-22 08:35:07,308 INFO L226 Difference]: Without dead ends: 76282 [2020-12-22 08:35:07,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76282 states. [2020-12-22 08:35:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76282 to 76278. [2020-12-22 08:35:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76278 states. [2020-12-22 08:35:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76278 states to 76278 states and 118845 transitions. [2020-12-22 08:35:12,005 INFO L78 Accepts]: Start accepts. Automaton has 76278 states and 118845 transitions. Word has length 97 [2020-12-22 08:35:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:12,005 INFO L481 AbstractCegarLoop]: Abstraction has 76278 states and 118845 transitions. [2020-12-22 08:35:12,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 76278 states and 118845 transitions. [2020-12-22 08:35:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:35:12,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:12,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:12,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:35:12,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:12,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1386186639, now seen corresponding path program 1 times [2020-12-22 08:35:12,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:12,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367107139] [2020-12-22 08:35:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:12,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367107139] [2020-12-22 08:35:12,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:12,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:12,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081343999] [2020-12-22 08:35:12,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:12,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:12,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:12,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:12,117 INFO L87 Difference]: Start difference. First operand 76278 states and 118845 transitions. Second operand 6 states. [2020-12-22 08:35:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:23,224 INFO L93 Difference]: Finished difference Result 291265 states and 453309 transitions. [2020-12-22 08:35:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:23,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:35:23,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:23,988 INFO L225 Difference]: With dead ends: 291265 [2020-12-22 08:35:23,988 INFO L226 Difference]: Without dead ends: 215066 [2020-12-22 08:35:24,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215066 states. [2020-12-22 08:35:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215066 to 151084. [2020-12-22 08:35:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151084 states. [2020-12-22 08:35:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151084 states to 151084 states and 234238 transitions. [2020-12-22 08:35:33,363 INFO L78 Accepts]: Start accepts. Automaton has 151084 states and 234238 transitions. Word has length 98 [2020-12-22 08:35:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:33,364 INFO L481 AbstractCegarLoop]: Abstraction has 151084 states and 234238 transitions. [2020-12-22 08:35:33,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 151084 states and 234238 transitions. [2020-12-22 08:35:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:35:33,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:33,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:33,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:35:33,395 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash -508006273, now seen corresponding path program 1 times [2020-12-22 08:35:33,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:33,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014453029] [2020-12-22 08:35:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:33,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014453029] [2020-12-22 08:35:33,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:33,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939180567] [2020-12-22 08:35:33,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:33,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:33,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:33,778 INFO L87 Difference]: Start difference. First operand 151084 states and 234238 transitions. Second operand 5 states. [2020-12-22 08:35:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:48,533 INFO L93 Difference]: Finished difference Result 288990 states and 445919 transitions. [2020-12-22 08:35:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:35:48,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:35:48,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:49,328 INFO L225 Difference]: With dead ends: 288990 [2020-12-22 08:35:49,328 INFO L226 Difference]: Without dead ends: 288988 [2020-12-22 08:35:49,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288988 states. [2020-12-22 08:36:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288988 to 152812. [2020-12-22 08:36:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152812 states. [2020-12-22 08:36:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152812 states to 152812 states and 235966 transitions. [2020-12-22 08:36:00,393 INFO L78 Accepts]: Start accepts. Automaton has 152812 states and 235966 transitions. Word has length 98 [2020-12-22 08:36:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:00,394 INFO L481 AbstractCegarLoop]: Abstraction has 152812 states and 235966 transitions. [2020-12-22 08:36:00,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 152812 states and 235966 transitions. [2020-12-22 08:36:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:36:00,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:00,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:00,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:36:00,424 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:00,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747548, now seen corresponding path program 1 times [2020-12-22 08:36:00,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:00,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559233320] [2020-12-22 08:36:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:01,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559233320] [2020-12-22 08:36:01,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:36:01,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204633920] [2020-12-22 08:36:01,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:36:01,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:36:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:36:01,063 INFO L87 Difference]: Start difference. First operand 152812 states and 235966 transitions. Second operand 10 states. [2020-12-22 08:36:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:58,430 INFO L93 Difference]: Finished difference Result 929062 states and 1432784 transitions. [2020-12-22 08:36:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:36:58,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-12-22 08:36:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:00,643 INFO L225 Difference]: With dead ends: 929062 [2020-12-22 08:37:00,643 INFO L226 Difference]: Without dead ends: 831112 [2020-12-22 08:37:00,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:37:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831112 states. [2020-12-22 08:37:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831112 to 153492. [2020-12-22 08:37:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153492 states. [2020-12-22 08:37:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153492 states to 153492 states and 236846 transitions. [2020-12-22 08:37:21,174 INFO L78 Accepts]: Start accepts. Automaton has 153492 states and 236846 transitions. Word has length 99 [2020-12-22 08:37:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:21,174 INFO L481 AbstractCegarLoop]: Abstraction has 153492 states and 236846 transitions. [2020-12-22 08:37:21,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:37:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 153492 states and 236846 transitions. [2020-12-22 08:37:21,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:37:21,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:21,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:37:21,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:37:21,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:21,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1890386908, now seen corresponding path program 1 times [2020-12-22 08:37:21,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:21,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897308887] [2020-12-22 08:37:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:21,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897308887] [2020-12-22 08:37:21,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:21,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:37:21,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933677660] [2020-12-22 08:37:21,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:37:21,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:37:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:37:21,469 INFO L87 Difference]: Start difference. First operand 153492 states and 236846 transitions. Second operand 10 states.